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How to install Microsoft Windows 8 on Windows 7-based computer and How to install Microsoft Windows 7 on Windows 8-based computer

The above symptom is associated with, but not limited to, the following systems:

ThinkPad:

ThinkPad L430, L530

ThinkPad S430

ThinkPad T430, T430i, T430s, T430si

ThinkPad T530, T530i

ThinkPad W530

ThinkPad X1 Carbon (Type 34xx)

ThinkPad X131e

ThinkPad X230, X230i, X230 Tablet, X230i Tablet

ThinkPad Edge S430

The system is configured with:

UEFI BIOS feature

Applies to

Microsoft Windows 7

Microsoft Windows 8

Solution

How to install Microsoft Windows 8 on the Windows 7-based computer:

Update the UEFI BIOS to the latest version which supports Windows 8.

Turn off the computer.

Turn on the computer.

While the "To interrupt normal startup, press Enter" message is displayed at the lower-left area or lower-center of the screen, press the F1 key. The ThinkPad Setup menu will be displayed. If a password prompt appears, type the correct password.

Select Restart, then make sure the operating system Optimized Defaults option is set to:

Enabled (for Windows 8 64-bit)

Disabled (for Windows 8 32-bit)

Press the F9 key to load default configuration.

Select Yes.

Insert the Windows 8 Installation DVD into the DVD drive, then press the F10 key to save configuration and exit.

Hold down the Windows logo key and press C to open the Charm bar on the screen.

Select Settings, then Power from the menu.

Select Reboot to restart the computer.

While the "To interrupt normal startup, press Enter" message is displayed at the lower-left area or lower-center of the screen, press the F1 key. The ThinkPad Setup menu will be displayed. If a password prompt appears, type the correct password.

Select Restart, then make sure the operating system Optimized Defaults option is set to Disabled.

Press the F9 key to load default configuration.

Select Yes.

Insert the Windows 7 Installation DVD into the DVD drive, then press the F10 key to save configuration and exit.